My hair grays, that of my brother, 2 years older, not. Why is that?

At what age did your father turn grey? Genetics has alot to do with. Plus, stress, diet and what shape, your in, all are contributing factors. Is your brother a more contented person with a solid foundation of a good career %26amp; a healthy %26amp; loving relationship with himself and another? When was the last time that you had a complete physical examination by your doctor? There might be a hormonal imbalance.Check it out.